【摘要】 分析了大功率发光二极管(LED)的特性和LLC谐振变换器均流电路原理,提出了一种基于LIE谐振的大功率多组LED驱动电源的电路方案,并进行了仿真和实验研究。仿真和实验结果表明,在多路LED负载因个别短路或断路原因发生负载变化时,各LED串之间能较好地均分电流,具有较好的均流效果。更多还原

【Abstract】 Characteristic of high power light emitted diode(LED) and principle of LLC resonant converter current balancing are analyzed.The circuit based on LLC resonant high power LED driving source is proposed and is tested by the simulation and experiment,and the results prove that when the load changes by the short circuit or broken circuit in multi LED,each LED can realize the current balancing and has the good performance of current balancing.更多还原